Abstract
When asbestos existence is investigated and asbestos is before demolition of a building, it is obliged to remove appropriately, and to carry and dispose. Writers are developing the system which screens wide angle asbestos containing construction materials quickly with a near-infrared camera. The screening technology of chrysotile with most amount of the construction materials used was developed, and it experimented on site, and compared with the analysis result of the regulating method. In this paper, a principle and an outline are introduced and the result of an accuracy verification experiment is reported.
